COMPLIANCE INFO_1984-1998 - Laserfiche WebLink

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Job No. 9815012 June 11, 1998 Page 2 The project involved removal of three 10,000 -gallon gasoline USTs (T-1 through T-3) from the subject property by West Star Environmental Inc. (West Star). The USTs were located west of an existing canopy structure (see Figure 1, Sampling Location Plan). Two dispenser islands were located excavated from beneath the dispenser islands. Excavation for removal of the USTs was about 40 feet long, about 23 feet wide and about 12 feet deep. Table 1 presents the dimensions, depth, capacity, and product content of the USTs. * Depth below adjacent grade to the bottom of tank. Following excavation of the tanks, two confirmation soil samples were collected, for chemical analyses, from beneath each UST. The soil samples were collected from depths in the range of about 2.5 to 3 feet beneath the bottom of the USTs from the approximate locations recommended by Mr. Robert McClellon of the San Joaquin County Environmental Health Division (SJCEHD). The soil samples were collected from the excavator bucket by pushing 2 -inch by 6 -inch brass or stainless steel tubes into the soil. Two soil samples were collected from a depth of about 3 feet from the former location of each of the dispensers' islands. These samples were collected by pushing 2 -inch by 6 -inch brass or stainless steel tubes into the soil. Soil USTs backfill soil and the soil excavated from the dispenser area were stockpiled to the TABLE 1. TANK DIMENSIONS AND PRODUCT CONTENT Tank Number Contents Diameter, Feet Length, Feet Volume, Gallons Depth, Feet* T-1 Gasoline 10 18 10,000 12 T-2 Gasoline 10 18 10,000 12 T-3 Gasoline 10 18 10,000 12 * Depth below adjacent grade to the bottom of tank. Following excavation of the tanks, two confirmation soil samples were collected, for chemical analyses, from beneath each UST. The soil samples were collected from depths in the range of about 2.5 to 3 feet beneath the bottom of the USTs from the approximate locations recommended by Mr. Robert McClellon of the San Joaquin County Environmental Health Division (SJCEHD). The soil samples were collected from the excavator bucket by pushing 2 -inch by 6 -inch brass or stainless steel tubes into the soil. Two soil samples were collected from a depth of about 3 feet from the former location of each of the dispensers' islands. These samples were collected by pushing 2 -inch by 6 -inch brass or stainless steel tubes into the soil. Soil USTs backfill soil and the soil excavated from the dispenser area were stockpiled to the